Engine.



M. TIBBETTS.

ENGINE.

APPLICATION FILED MAR. 13, 1909.

Patented Oct. 13, 1914.

4 SHEETS*SHEET 1.

QXM/lmmeo 26' W M. TIBBETTS.

ENGINE.

APPLICATION FILED MAR.18. 1909 r 1,113,510, Patented Oct. 13, 1.914

4 SHEETS "SHEET 2.

1 l 30 Hg. 3. 37

100 41 g p- 36 V x 42 and similar devices, and particularly to min various position.

' nnrrnn s'rATEs PATENT OFFICE.

MILTON TIBBETTS, OF DETROIT, MICHIGAN, ASSIGNOR TO PACKARD MOTOR CAR I COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF IVIICHIGAN.

' ENGINE.

hrmuz. compressors and blowingengines, pumps,

ternal combustion motors employing sliding alves. Engines have heretofore been constructed in'wnich the inlet and outlet ports are arranged oppositeeach other and in approxh. mateiy the same plane and inavhieha pair of sleeves surround the piston and have operating pors to open and close the cylin dcr ports, and it is improvements upon and additions to such motors that constitute the subject-matter of my present invention.

()ne of the. objects of my inventica'is to obtain a larger, quicker and more positive opening and closing of the inlet and exhaust ports of the edgine than has heretofore been accomplished.

. r J "l Another object is to pro ule a s mplev and effective air compressing andoil pumping mechanism for the engine without materi all? increasing the Working parts.

'ihcse and other objects will appear in the illiowing description taken in connection the drawings, in which,- igure 1 is a transverse sectional view through the center of the cylinder of an engine tmhodying some of the features of my invention; Fig is an enlarged vertical section. on the line of Fig. 1; Fig. 3 is a section similar to Fig. '1 showing an engine cmhodving another form of niy invention; 'l is a section on the line -4- of Fig. 0; is a fragmentary sectional view ap proximately on the line ai of Fig. 4; Fig. 6 is a section similar to Figs. 1 and 3, shorting an engine embodying another form of my invention; Figs. 7 to .11 are enlarged seetional views showing one form of the ziasziping n'iechani n with the moving parts Figs. 12 to 15 are 'enlarned sectional views shtuvihg another form Specification of Letters Patent.

Application filed March 18, 1909.

of the pumping mechanism with the moving Serial No. 484,231.

graniniatic view; and Fig. 17 is adiagram showing the opening and closing of the ports in the pump illustrated in Figs. 12 to 15.

Referring particularly to Figs. 1 and 2, 20 represents the casing or cylinder of the engine ha ving double walls forming a water jacket 21. This casing is mounted on the upper or supporting section 22 of the crank case ndthe crank shaft 23 is mounted in bearingsfil between said section 22 and the removable intermediate section 25. The bottom of the crank case is closed by the removable cover ZGuhich forms an oil well into 'inafter described. This shaft 28'is driven by the cranklshaft by two'to-one gearing SL ch as illustrated in Fig. 3, whereby the motor is operated on the four stroke cycle.

The upper end of the casing or cylinder '20 is closed by a removable end wall'or head 30, the cylindrical shaped central part 31 of -Which extends down into therasing as shown, leaving an annular space32between its periphery and the inner walhof the casing. This head is also water jacketed as shown,' its water jacket being connected with the jacket- 21 of the cylinder and it is formed with horizontal ports 33, which nearly divide it, the lower part 34 being suspended only by the. hollow arms 35 through which the Water passes to the jacket 36'. Said lower part 34 is in the form of a hollow ring with theports 33 along its upper edge and thus these ports are in constant communication with the interior of the casing or cylinder 20. A. spark plug 37 is provided in the cen tral part of the head for igniting the charge .in the cylinder as is well understood.

The casing or cylinder 20- is formed with extend parallel with each other entirely aroulnl the casing, being separated by a thin partition 40. The inlet chamber.38 communicates with the inlet pipe 41 and with the ports 42 in the casing wall which ports 42 are arranged aporoximately in it plane parts; in various positions; Fig. U5 is a die [with the ports 33 in the head above de- Patented Oct; 13, 1914.

scribed, and the exhaust chamber 39 (30311 municatcs with the exhaust pi )e 43 and with the ports 44 in the casing wall, which ports 44 extend practically around the cylinder and are arranged just below the lower edge of the part 34 of the head above described.

It will be understood that with the above arrangement of chambers and ports the total area of the ports will be. greater than in engines employing opposite inlet and outlet ports where each port extends less than half way around the cylinder. and when the engine is used as an explosive motor the hot exhaust gases passing through the exhaust chamber will tend to warm the gases entering the inlet chamber.

Guided by the inner wall of the casing 20 and extending into the annular space 32 is. a sliding valve shown in the form of a cylindrical sleeve having two scts'of ports 51 and 52, each of which sets extends entirely around the sleeve, the sections above and below the ports being connected by webs. The ports 51 are adapted to register with the inlet ports 42 and consequently with the ports 33 in the head 30, and the ports 52 are adapted to register with the exhaust ports 44. Sliding within the sleeve 50 and also extending into the space 32 is another similar sleeve or sliding valve which has similar sets of ports 54 and 55 I which also extend entirely around the sleeve and are adapted to respectively register at times with the ports 42 and 44 and with the ports 51 and 52. The eriphery of the central part 31 of.. the head vided with split packing rings 56 above and below the ports 33 whereby the ports 54 and 55 are made tight when said ports are over these rings which is preferably during the compression and firing strokes of the motor...

"The sleeve 53 above described forms the piston barrel, the piston 57 being shown therein and connected tothe crank shaft by the connecting rod 58.

The'sleeyes 50 and 53 are reciprocated by the cranks 29 ;on the shaft 28 through,

" the rods 59 and 60 respectively, andsaid cranks'i29 are arranged at approximately 90 apart with the inner sleeve connected to the leading crank-whereby the outer sleeve follows the inner'sleeve at a quarter period from it, and the various ports above described are so arranged and proportioned that the inlet port will be-0pen to. the interior of the inner sleeve or piston barrel and the exhaust port closed thereto during the suction stroke of the piston, both inlet and exhaust. ports will be closed during the following compression and tiring strokes of the pistommnd the exhaust port open and the inlet closed duringthe following "exhaust strolte; as is usual in tour stroke cycle motors. With the sleeves so arranged about 30 is pro-' a quarter period apart there will be a i'iElitLiYQ 62 adapted to operate in the enlargedbore (51. Thus it will be seen that the relative movement of the sleeves will. cause the pump chamber 63 between the sleeves to be a..- tprnately enlarged and contracted so that by arranging suitable ports in the sleeves such relative movement may be utilized as a pump for various purposes. In said Figs. 1 and 2, the lower end of the outer sleeve is provided with an outwardly extending annular ledge (54, having a flange 65, which ledge is adapted to catch the oil splashed by the cranks revolving in the crank case, and openings 66 communicate with the interior of the'puinp chamber 63 when the sleeves are farthest apart, whereby the oil caught by said ledge is drawn into the chamber, and as the sleeves then come to gcther the .oil forced up through check valve 67 and passage 68 to a passage 69 formed between the sleeves as shown. Said passage 69 leads part of the oil upwardly to the top of the sleeve and part of it is led around the sleeve by distributing grooves 70 by which the sleeves are lubricated. If asuperfluous amount of oil reaches the space 32 between the bead and the casing it Will flow by gravity or pressure from the pump through the overflow passage Tl formed betwecen the outer sleeve and the inner wall of the casing. Thus, so long as there is a supply of oil in the crank case it will be splashed onto the ledge 64, pumped up through the various oil passages and fed to the distributing grooves 70, and the surplus finds its way down from the. head tl'irough'tli'e overflow passage to the crank case again, oris caught immediately by the ledge and returned by the pump. Small openings 72 may be formed in the outer sleeve to aid in the lubrication of the cylinder wall. Thus a constant. flow of oil is. kept up and the sleeves and cylinder are amply lubricated.

it will be understood that the passages (33 and 21 reach the tops of the sleeves by be ing partly formed in webs between the va an 1110 \"ili A ail: m

s n! 3 w r1 llllin' in U l=1lilll'l-1 (Ill lill w-hal'ls j as a; in (-lmrl MW". in this 'lhrln of the i iii-million, l have shown twu operaring slmih miron will side 01 the motor. and

they 1: llill lltili in l-nnslrm-tiun :lllkl arr lii iir U zxmiirwne gearing i'rmn lhe :inh all, such as large 1% :mil wmll g'r-wr 105,", 'llw use (if t'. A lqwrating' -lwll; il'lliil(l$ againsi twisting or binding 01' l i\ lli. in. sit 10 d: at 62*, to fit said enlzir'iril hnriin Pig. .3 the oil pump llliul is I shim. u ali 11-11 and the Outlet al 111, and cal-h y il w ma e; in the fnrin (if a iiQL'ii \alm': Tm! illwtrzilwl at 37 in .liig. 1. Thin Ari-Jun u llm pump is obvious; abs ale-cw .n Lh-v h w sirukr rrealin; a vacuum in lhe chm ($3 hirl: draws the oil through lhe inle 1 J. e rearhes the bottom .1 its s-Lrn hr rvlurn or up sl'rwlie 01' j the sleeve in. ring; ihis (iii thrmigh the outlet, 111 firms which t may be led through pipes to any desired i minis. If desirahh; the inlci; 110 may be arranged al the tap of the (ham-- her 433 instead of at the bottom as shown.

In Fig. 6 another form of the invention is shown in which two superposed slime ralvvs i are QYUPlQVLii, the innrr sir-ere 50* Wins: i similar in the him-1r slvrre ,ilfifill in Fig, l, l but tin mile) Jews -3 is :--l1illill z'lmn fin i inner nu l Wiiilll'itilPS mil) in -unwilling; lih lmver m iYliunQ rls, tlw'imzrr slw e T tonlrnlli 'igr l is I ll w? lix'cfipi and as ill a Tilu in he timi H Pail hose i'nQYic-uslv described and like parts are similarly dusignnled.

Figs, 7 tv 11 illustrate a form of oil or air pump :litl'ering slightly in its method of 0pwr liuu l'rum tlmse irevionsly iilhscriberl, but Ifil,llii 'lilii l0 an form of nmtur employing :1 plnminv n superposed relatively sliding yalws. "lhis Jul-m n1 pump is narticularl r-i Q:il lvr pumping: a very small quantity 1 at r-zr-h riluki. hut may of (Ulli''i he new! in minor ways by \anving the size and mgnirin" wi' 1hr irl'ianilwrs and ports. A warm vhaniber (3:1 formed between the %-l"1\l) f 3; filial 53 as in Fig. 1 and a purt ll?! svrirs nl' portal C6 is formed in the inner siren: in pnsilimi to be open to the i-hznnhrr (33 when the sleeves are at their llllllillllllill tame apart, Whurrhy a charge 5 1 air ruin i'lie Prankrase is drawn intn the rliamher, the sleeves then approach each ll (,i'izllljl'M'Pl i3 is (if course contracted and 110 air therein coir-pressed, its only out lwl bring through passage 112 suitably formed. in rlw inner sleeve or between itand H1101 siren). The outlet 113 of this pasiig r arrang'm'l to register with a port mprwlm Ill extending entirely thmugh the :Hl 'i givzjrs 50 it the same time that said mihr YQg SHZ'S with the outlet port 111 farmed in the cylinder wall, whereby the air miniprvssci'l in saial chamber rushes through aid mrket anil is discharged into said outlet gmrt. or pipe 111 \Vhile th'e charge of air is being drawn into and compressed within the chamber 63 as above described, lhP purl or pncket 114 is in register with the ii inlet {ran ,0, which port in this instance vlmigraiml vertivally so that ths pocket l'lffihltll with in for cmisiderablc peul in" the :elrul-te n1: the outer sleeve, and the Slllli pnrt r-r pipe flows by gravity or g lire inl'rz tin pocket 114, so that when the rhargir of air rushes through said pocket as: allure. set forth 11 carries with it the r 10 of oil therein m'intained and from the p-pe ill it is fed to the various points Of the motor tn he lubricated, or to an nil compression tank as desired. The quantitymf nil in be fed aL each charge may be regularell by varying the size of the pocket 114 nr by the nvedle valve 115. The various wsiaiwris 0F the sleeves shnwn in Figs. 7 to 11 amply illustrate the operation of the. pump. it will of course he understood that the PGflCQ'i' 114 may be elongated upwardly of the port 40 and the same result Wmlhl he acmmplished.

ln lhe fullil of pump illustrated in Figs. 1'? to 17 lhorv are no clwrk Valves and there no r01innm'iivafiirn with thv crank Case. a inlet urt 110* and thr outlet" purl 111 3 irranrcri as shown, each lacing slightly -lmigralrcl lnngitmlinallr of the cylinder, that thrport 1 13 of passage 112* leadin; from tin: pump chamber 63, registers with the inlet 110 during the suction stroke of the pump and will; the (milel lll during .the l-uinprcsbiun 'clll'Oliif of the piziiigili Thus :1 rnna-idlrralvle rlwii'gc (2? oil may be drawn lam,- tlm pump :nirl lllSLllfUgQd through the pm 1 i l" anal min llwiicc led l any :leewlrul pniiml, or the pump may lac used to s mpress air and store it in a pressure tank, from whence it may lie usml for "flllGllS pur poses about the motor as illustrated in Fig. ll'i. leferring to said figure represei'its ll'w mmm casing! 110* the an" inlet for the ramp inside {hi3 motui and, 111 the air out et llm cmuprw secl air led by pipe: 116 u lllfi pressure tank l'lT, from which tank it may be piped as desired through reduc ing valve 118 and pipes 119, 120 and 121 to th oil and gasplene'tmiks 135 and 1136, re

Y may by led fium the tank rqiwtivcly, of hit mot-31;, whereby Oll and gasnlcne may he fe l under pressure. Alsa a iialpa 1'22 mu convey the air in s (23H li-ilmtting mlw 1:43 and through pipe 12% to the cylinder 0f the motor for starting the same. The three-way cock 125 controls all mission of {ii t0? llie'pipesllil and 122. Air ll? illllullgli Qiwl; 126 and floxllilo tu e 127 to (lie iii- 3s 4f i'iie'wlii lo xlimi tlw engine is used in a mailmwelzlvrla Hillier 11ml YLUl llS u 3m mull? uli' llze pinup 12s :ili smi'l lli glnw-s {lli lllw l}; 2s: illus- 3 wine of i in :2 i1. gmrlzmi, fl i lb Fil amenw pm llw l lill Milk,

I Lille? lanai;

nst

. l1 tliQ uullm; put. l) tlw l= w the l wi ly; 1N0: ll'w pmlilinii l'rfl 1w; lungs Hl v vlim'li'i' liiotms 0F {liv vlnsrm'mr above de -irihml, the sleeve pump of one cvli 1, amo

my b Cflmltl to one Class of disii'iliirtlng devirves and the pump of anutlxer 'yiider t0 flllf'jlllPl such class, 0r the sleeve v ylii'ulers may be connected .gle \lism'ilmtiiig sysl-mii as desired.

Having thus described my invention, what 1 claim is:

l The eombinatiim with a casing havi :1 head extending inns one end thereof, (using having inlet; i all outlet orts in diflm-ent transverse planes and said baud having a port coliperating with one of said casing parts to open said casing port to the interimof the casing, of a pluralit Y of wilveei Aiding between said casing and ml uml controlling the ports therein.

The combimition with a casinghav'm a lisml extending into one end thereof, sai (Rn lug liming inlet and outlat poxrlis in diffurmit l.l3llf1) ll$0 planes and une of which is illyl'lil? the ldwer EIHlOf the extnsiun Q11 said howl, 0f a. plurality of coaxial sliding valves arranged between the extended par: of said lmul and the surrounding casing and gonli'olling said ports, and positive means for I sliding: said valves. I

23. The combination with; casing having a head extending into one and thereuf,- said liflslllg liming inlefii, and eutlet Ports in dif" Frill mum 9 lines, and said head hav ing u will uujpernllng will: use if said casing Of a. pluruliiy of coaxial sliding I \Zlll'QS; iim'cllii'ig all 0f said ports, and l means for sliding said valve&;.

l. 'llis: l'fQllllllllililllOX'. Willi a casing having a howl mil/ending into nine (and llwreof, I Saul (fusing luau lug inlet anal elitist parts in l Gillerem tmnsvi-rse planes and said head. having a port" cmipex-atillg with one if said casing poms oil a plurality of maxial sliding val es nniitrwlling all of said ports, and pqsltlne manna for sliding said. wives .3. TM? (Ulllljlllilllflll ll/ll :i arming liming a ln-ml i-xnzrilliiigi into 0:10 anal than) said wing: inlet; and uullvl ports in difl lerm'il lllllhflflbi! plsmer; lull will head liav ing a purl miipmmilxig with 0310 (if said (my Q My l r1 8, of a 'i)ll1?"ill$y (if coaxial slinling valves lwlviemi film (PXlBIlilQd part. m the hem} nd tlm @urrumi-zl'ing casing and conall 115 w ll part8, and means for i all 1 with a 0 ing having: film one 0nd men-0f, said 4' 21ml millet porlss in lifsie planes and said head havwmllng u ilvh me 05 1 plurality ml? .rzuzixial sliding in; pm w. ml

\nhhlmuvuml xlle extended part (if tliv howl {Hill the Elll'lD-l'llldlllg casing and canli'nlling all fif said DUNE, and positive means fair sliding said valves.

T ln an vngine, the. combinatimi with a casingand a piston, {if a pair of su'perpesed sleeve valves surmundmg the piston, nne of fii 'l by the simian "for fi'dltililfii :1. cling-go of l verse planes, a rolmivelg; immovable and v 12: ihz'ouglz said pocke'i w time 5L mg i all in said casing, and aving a port so Wiill. said ontl m, pom, operating with one of the ports in said in a n'iotoi', the combination wiii'i the ing and a fiiston Working in the cashi g 0 ng liming inlziken ii onlianv-L poi'fl the ii plurality of concentric sleeves or idinfi 25M; in the mining n ihvsur rp-Jsed valves controlling said ports, and positively on wiidiilgf aluiwm m: trolling staid poms, said operating means for sliding said va lven. ing having oil iiilai and millet north and 2G. The combination with a casing hnvho outer of aid slw having; a pocket ing inlet and outlet ports in difierent transudiipted to reg Wllll hid inlcl and outverse planes, a relatively immovable end at Lliilwon limos and ii'pump wall in said casing and having a port co- 1, ,l said vine 2 adapted to send a opvrating with one of the port in i i rugs; air vim said pocket at tho ing and a. piston working in the casing enm n 1411511911 with said outlal; port tirely beyond said port of a plurality of in :1 moloiy ilio combination with the concentric sleeves oi' sliding valves control" (Dining having intake and exhiiusi poms, the ling said pbrts, and positively operating pimm in the 'z." sing and the superposed means for sliding said valves. sliding @l niiiroliing said port-s, said 27. The combination with a motor having rming; in: mg on i la! and outlet port and :2 sliding valve, of a pump of which said ilTo'. Ollilrl' of sawl having a pocket valve forms the piston, the ports of said "iiZiPll-Ltii in r iriil" with iid inlet. and outmotor and pump being independent. 02 ports an; in? Y'ililfi ill; said innei sleeve 23. In an engine, the combination with a in lillving: a! ug? horn its lower cylinder and a rolat-ively sliding valve, of -nd and sniri oulesr being enlarged to a pump of which said valve forms a part, iii said born. vvl'ierehy a, azlmniher formed the ports of said pump being independent lwiween the sleeves \vhiuli expands and con of the portsof the engine. iltlkhfi the slooves are relatively i'ecipxo 29. In a motor having two valve sleeves marsh and said outer sleeve having a pan sliding one on the other, a pump barrel iextnnding from said chamber and formed in one of said sleeves, a piston n mil to register wii'o mid ponket at the formed in tho other sleeve, said sleeves havi'umi maid povlwf with said ing ducts formed in them to connect with gwif tho pump outlet and means for relatively 11 a inoim; iii-1 C(Millllllllililflil with the resign-00min said sleeve. casing; having ini ali and exhaust orto 30, I a hydlgcarbgn motor having valve fin pinion ivilill lii and the two snperpossd sleeves sliding one on the other between *flllil P' will the piston and the cylinder, :1 pump barrel 'ulot ul'lllwllilt porisnrmnged in f n-med in one of said sleeves. a. piston pl zines and the out/e1 formed in tho other Sl9%V8., and means for :1 p ll zidzipuad. to 1 :nlntively reciprocating said iloeves.

-lfl'ii at different [inn 31. in n hydrocarbon motor having "valve viii f CH!!!" sleeves sliding one on the oiliizr betwee il'lv n: lilo wining and to (HJll ision and the cylinder. 2 pump hm'i'el oi'nm'l in one of said Jeeves a piston "ow ed in the other sleeve said 11 ewe hav I lillK-fij, and ontlot pork; for mid pump nation with ea Hui-i101 your mail mans": for i'olnlivoly rmiipromiing Siiikl Correctiorts in Letters Patent No. 1 ,1 13,510.

It is! hereby certified that in Letters Ratent. No. 1,113,!i10, 13, 1914, lipon the appliqhtion of Milton .Tibbetts, pf per it, Michignp, rot m improvement in En g ine, 'er'rors afipear in the printed specifiqzjztipu mq iring correction as (olld'wsrlage 5, line 4?, f r the word i chfli g mud-inc loeingg; page 7 7, be ie re the 'word fvglvp insert the word aqdthe Letters l nttent should be read with these, corrl tiqns thereih that the ngqne tiny co fanh to the record of the case iii. the Pfitut Ofligel Signed and geal c tthis 17th day pf Noremher, A. D., 1914 [sun] 

